JPS5774880A - Loading device number retrieving method of magnetic bubble memory device - Google Patents

Loading device number retrieving method of magnetic bubble memory device

Info

Publication number
JPS5774880A
JPS5774880A JP15076580A JP15076580A JPS5774880A JP S5774880 A JPS5774880 A JP S5774880A JP 15076580 A JP15076580 A JP 15076580A JP 15076580 A JP15076580 A JP 15076580A JP S5774880 A JPS5774880 A JP S5774880A
Authority
JP
Japan
Prior art keywords
signal
pin
memory device
inverting circuit
bubble
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP15076580A
Other languages
Japanese (ja)
Inventor
Osamu Hirakawa
Masashi Irie
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15076580A priority Critical patent/JPS5774880A/en
Publication of JPS5774880A publication Critical patent/JPS5774880A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
    • G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
    • G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
    • G11C19/085—Generating magnetic fields therefor, e.g. uniform magnetic field for magnetic domain stabilisation

Abstract

PURPOSE:To retrive the number of loading devices in a cassette-like magnetic bubble memory device, by utilizing a bubble select signal and a cassette insertion conforming signal. CONSTITUTION:An inverting circuit 22 is connected to a bubble select signal line 20, inverting circuit 24, 25 whose mutual input terminals have been connected are connected to a cassette insertion confirming signal line 23, and to its input terminal, an output terminal of the inverting circuit 22 is connected. Also, to the signal line 23, an electric power supply V is connected through a resistance 27, and also a jumper pin 28 leading to earth is provided. Furthermore, in case when the number of loading devices is one, the pin 28 is turned on, and in case of two devices, it is turned off. When the pin 28 is on, the cassette insertion confirming signal Mon becomes ''0'' irrespective of a level of the bubble select signal Ds, and when the pin 28 is off, the signal Mon of ''1'' or ''0'' corresponding to the signal Ds is outputted. In this way, the number of loading devices is retrieved.
JP15076580A 1980-10-29 1980-10-29 Loading device number retrieving method of magnetic bubble memory device Pending JPS5774880A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15076580A JPS5774880A (en) 1980-10-29 1980-10-29 Loading device number retrieving method of magnetic bubble memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15076580A JPS5774880A (en) 1980-10-29 1980-10-29 Loading device number retrieving method of magnetic bubble memory device

Publications (1)

Publication Number Publication Date
JPS5774880A true JPS5774880A (en) 1982-05-11

Family

ID=15503920

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15076580A Pending JPS5774880A (en) 1980-10-29 1980-10-29 Loading device number retrieving method of magnetic bubble memory device

Country Status (1)

Country Link
JP (1) JPS5774880A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121584A (en) * 1983-12-05 1985-06-29 Takaoka Ind Ltd Bubble expander

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60121584A (en) * 1983-12-05 1985-06-29 Takaoka Ind Ltd Bubble expander

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